Universal Flash Storage (UFS) is a flash storage specification for mobile electronics, designed to deliver high data transfer speeds — critical for fast app loads, smooth gaming, and quick data access — while eliminating the market fragmentation caused by competing formats like eMMC (which couldn’t read and write simultaneously) and expensive, inefficient microSD expansion. This standard was created and developed by the JEDEC Solid State Technology Association and is adopted by most major electronics companies like Nokia, Texas Instruments, Samsung, Micron, and others.
You might have missed it, but in February 2026, JEDEC finalized a new storage specification — UFS 5.0 — that promises an enormous leap in performance that will be coming to new phones starting in early 2027, most likely starting with the Samsung Galaxy S27 series (which is likely to be announced in January or February 2027).
UFS 5.0 —…promises an enormous leap in performance that will be coming to new phones
What is UFS storage?
A bit of history
Many years ago, phones used eMMC storage. While that was reliable and cheap, eMMC could only read/write data one at a time. Over time, as phones became more advanced with multicore 64-bit processors and desktop-level RAM, consumers ran into bottlenecks as phones could do more, like record and edit 4K video or play console-quality games. With eMMC storage, phones were not living up to their potential. In 2013, the first UFS storage solutions started to emerge, which provided a full-duplex serial interface, allowing phones to quickly read/write to storage like a desktop SSD.
Why UFS 5.0 is different
And how it’s better
|
Feature |
UFS 4.0/4.1 |
UFS 5.0 |
|
Max seq read/write |
Up to 5.8 GB/s |
Up to 10.8 GB/s |
|
Total bandwidth (2 lanes) |
46.4 Gbps |
93.2 Gbps |
UFS 5.0 is a massive leap forward, with promised max sequential read/write speeds of up to 10.8GB/s, which is nearly double UFS 4.1’s max sequential read/write of up to 5.8GB/s.
If you have a current flagship, like the Galaxy S25/S26 series (including the Galaxy S26 Ultra, which is nearly perfect), a Pixel 10, a OnePlus 12 or 13, or a Xiaomi 14 or 15, your device has UFS 4.0 or 4.1 (both of which have the same read/write speeds — the 4.1 standard is just an efficiency improvement over 4.0).
To put that into perspective, the leap from today’s UFS 4.1 to tomorrow’s UFS 5.0 will put phone storage read/write speeds on par with high-end desktop PCIe Gen 4 SSDs. That’s a big deal!
What does this mean? This speed boost means everything you do on your phone, from loading apps to recording and saving 8K video (just don’t buy an 8K TV anytime soon, please), will be near instantaneous. Also, this means that complex AI features like live video translation, photo editing, and even video editing can happen on-device and faster than using a cloud solution for AI processing. This level of storage performance will (for better or worse, depending on your stance) usher in the next-generation of AI-first phones with enormous on-device processing capabilities for AI workloads.
To put that into perspective, the leap from today’s UFS 4.1 to tomorrow’s UFS 5.0 will put phone storage read/write speeds on par with high-end desktop PCIe Gen 4 SSDs.
When will UFS 5.0 devices be available?
It’s now up to Samsung, OnePlus, and others
JEDEC’s finalization and publishing of standards like UFS 5.0 do not immediately translate into devices that you can buy. Once a standard is finalized, it’s up to OEMs like Samsung to integrate the new technology. To put things into perspective, the length of time between the last UFS standard getting ratified and when devices came out was 5–6 months. While in theory that brings us to the end of 2026, we’re likely to start seeing UFS 5.0 not until early 2027, most likely with the Galaxy S27 series. That’s because it will take time for memory suppliers, like Kioxia, which began shipping UFS 5.0-compatible memory module samples to manufacturers in late February 2026, to work with smartphone makers to integrate this new standard.
I didn’t realize this tiny letter on my microSD card was so important
Why are memory cards so confusing?
Should you wait for UFS 5.0 phones?
It depends on your needs
If you currently own a recent flagship from the last few years, your phone already has performance not dissimilar from desktop PCs of just a few years ago. Unless you are a serious mobile gamer or you rely on your device for content creation and editing, you probably never bump up against the performance envelope of your phone. While UFS 5.0 will usher in phones that have nearly double the read/write speeds of today’s best phones, you’ll probably only notice these improvements at the extremes.
While it’ll be nice for apps to open even faster than they do today (plus it’ll be exciting to see new on-device AI capabilities that UFS 5.0 provides), you probably don’t need to make a purchasing decision based on this upgrade if you have a relatively new phone in your pocket.
Current flagships from Samsung and Google will get software updates for seven more years, and so picking one of the new Pixels or Galaxy devices ensures you’ll get use of your phone until 2033. But if you’re looking at upgrading this year or next, you should absolutely consider a UFS 5.0 device if you want the absolute best.
- Brand
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Google
- SoC
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Tensor G5
Google’s flagship smartphone, the Google Pixel 10 features the Tensor G5 processor, an outstanding triple-camera system, and seven years of software updates. This is a phone you can rely on for years to come.
